A week (almost) with W10 mobile preview build-10549

This build is certainly a lot more stable. Fewer crashes definitely. Faster. And the biggest improvement of all i have to say, is the battery life. My god has it improved! So far, it's very much usable. I've in fact used it as a daily driver and it hasn't disappointed me much.

But wait!! I have to revert back to WP8.1. Why? Cause while the mobile hotspot not working, Edge constantly crashing, Groove music not working -- are not that big a deal and i can still work my way around it, the one important thing that is a must-have -- WIFI -- isn't working.

This is not a new issue. I've previously installed 3 other preview builds, and they all had this issue. I had backed out for a while and not tried the last few builds only because of this. I thought this would get fixed, but it didn't. And nobody else is complaining, so i guess i'm one of the only few unlucky insiders with this issue. So the reason(s) i would revert back:

This build solve almost all issues for L920, battery life is fair enough as my phone is going to 3 yrs, battery usage is not reporting so i don't have an idea who is eating up the power, I disabled some apps and the device hub from running in the background now less heat and noticed that battery gives me 7 hrs, playing music while using facebook, and/or 9gag during my commute.